Whatever the person or people I'm with have. I'm fine with either. Due to some things with my health, I cannot use hormone based contraceptive methods and I will never EVER get an IUD again (I've already had one surgically removed from my body, thanks). That means condom use and my keeping track of my cycle. For PiV with condom use I can't really tell a difference. For other things, it's something "extra" to play with and pleasure if it's there. I don't find a man to be lacking if he is circumcised, though.
I do think men should be allowed their own choice in the matter, but that's a separate thread topic.